the head of the nra, wayne lapierre and the husband of gabby giffords, mark kelly, will testify. david? >> along with them so many of those families from newtown. reena, thank you. >>> another image from washington making headlines tonight, president obama in his first joint interview with someone other than his wife, instead hillary clinton, when you think back, the two battling it out in the democratic primary nearly five years ago, making history coming down to the two of them. then going on to form quite an alliance, the connection behind the scenes and in front of the cameras. right here, as they observed the bodies of those diplomats brought home from libya. tonight, why the president decided to sit down with hillary clinton now. is it about a campaign that's yet to come? here's abc's david kerley. >> i think hillary will go down as one of the finest secretaries of state we've had. >> reporter: a first -- a dual interview with the president, who told cbs' "60 minutes" why he wanted to sit with hillary clinton. >> i want the country to appreciate just what an extraordinary r